What is a potential drawback of implementing a queue using an array with a fixed size?
Inability to store elements of different data types.
Increased time complexity for enqueue and dequeue operations.
Risk of queue overflow if the queue reaches its maximum capacity.
Requirement of complex algorithms for insertion and deletion.
Which of the following real-world scenarios can be effectively modeled using a queue?
Managing a priority-based task list.
Storing the browsing history in a web browser.
Handling customer service requests in a first-come, first-served manner.
Implementing an undo/redo functionality in a text editor.
What is the worst-case time complexity of searching for an element in a queue implemented using a linked list?
O(n log n)
O(n)
O(log n)
O(1)
What is the purpose of the 'front' pointer in an array implementation of a queue?
It points to the element that has been in the queue the longest.
It tracks the total number of elements in the queue.
It points to the next available empty location.
It points to the most recently added element.
If you were to design a system to handle customer service requests arriving through various channels, with each request needing to be addressed in the order it was received, which data structure would be most appropriate?
Binary Search Tree
Graph
Queue
Heap
In a queue data structure, what does the 'enqueue' operation perform?
Checks if the queue is empty.
Removes and returns the element at the front of the queue.
Adds an element to the front of the queue.
Adds an element to the rear of the queue.
How do you efficiently handle the situation where the array representing the queue becomes full?
Resize the array to accommodate more elements.
Stop accepting new elements.
Delete the oldest element.
Use a linked list instead of an array.
In a circular queue implemented using an array of size 5, the front is at index 3, and the rear is at index 1. What happens after two dequeue operations?
The front moves to index 1, and the rear moves to index 4.
The queue becomes empty.
The front moves to index 0, and the rear moves to index 4.
The front moves to index 0, and the rear remains at index 1.
In an array-based queue implementation, what happens when you dequeue from an empty queue?
The last element is removed.
An underflow condition occurs.
The first element is removed.
The queue remains unchanged.
What is the primary characteristic that distinguishes a queue from other linear data structures?
Elements are added and removed from the same end.
Elements are added at one end and removed from the other.
It is a sorted data structure.
It allows for random access of elements.